Cap with band deployment features

Patent metadata

Field	Value
Publication number	US-10105143-B2
Application number	US-201414295893-A
Country	US
Kind code	B2
Filing date	Jun 4, 2014
Priority date	Jun 5, 2013
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

According to an embodiment of the present disclosure, a medical device for deploying a ligation band may include a tubular body. The tubular body may include a proximal end, a distal end, a radially inner surface defining a lumen through the tubular body, and a radially outer surface. The radially outer surface may include protrusions arranged in rows extending at least partially around a proximal region of the radially outer surface. Protrusions in adjacent rows may be separated by a first distance. Surface features may extend at least partially around a distal region of the radially outer surface. Adjacent surface features may be separated by a second distance larger than the first distance.

First claim

What is claimed is:

1. A medical device for deploying a ligation band, comprising:
a tubular body including:
a proximal end,
a distal end,
a radially inner surface defining a lumen through the tubular body, and
a radially outer surface including:
a plurality of first protrusions arranged in circumferential rows extending transverse to a longitudinal axis of the body at least partially around a proximal region of the radially outer surface, wherein adjacent rows of the first protrusions are separated from one another in a proximal to distal direction by a first distance, and
a plurality of grooves, each groove extending at least partially around a distal region of the radially outer surface, all of the grooves being distal of a distal-most row of the first protrusions, wherein adjacent grooves are separated from one another in a proximal to distal direction by a second distance larger than the first distance.

2. The medical device of claim 1 , wherein the first protrusions and grooves are configured to engage the ligation band during movement of the ligation band along the radially outer surface.

3. The medical device of claim 1 , wherein the radially inner surface includes at least one radially inwardly extending second protrusion configured to engage an imaging device.

4. The medical device of claim 3 , wherein all of the grooves are distal to the second protrusion.

5. The medical device of claim 3 , wherein the imaging device includes a lens, the imaging device having a field of view through the lens, wherein the second protrusion is configured to engage the imaging device to position the imaging device so the first protrusions are outside of the field of view of the imaging device.

6. The medical device of claim 1 , wherein the radially outer surface includes at least one micropattern formed by a plurality of microstructures.

7. The medical device of claim 1 , wherein the first protrusions and grooves reduce surface contact between the ligation band and the radially outer surface, and include teetering points for initiating tilting of the ligation band as the ligation band moves across the first protrusions and the grooves.

8. A medical device for deploying a ligation band, comprising:
a tubular body including:
a proximal end,
a distal end,
a radially inner surface defining a lumen through the tubular body, the radially inner surface including at least one radially inwardly extending first protrusion configured to engage an imaging device, wherein a proximal region of the tubular body is proximal to the first protrusion, and a distal region of the tubular body is distal to the first protrusion, and
a radially outer surface including:
a plurality of second protrusions arranged in circumferentially extending rows on the radially outer surface, in the proximal region of the tubular body, wherein adjacent rows of the second protrusions are separated from one another in a proximal to distal direction by a first distance, and
a plurality of grooves, each groove extending circumferentially into the radially outer surface, the grooves being distal of a distal-most row of the second protrusions, wherein adjacent grooves are separated from one another by a second distance larger than the first distance.

9. The medical device of claim 8 , wherein the grooves are configured to engage the ligation band during movement of the ligation band along the radially outer surface.

10. The medical device of claim 8 , wherein the radially outer surface includes at least one micropattern formed by a plurality of microstructures.

11. The medical device of claim 10 , wherein the at least one micropattern increases a hydrophobicity of the radially outer surface in the distal region of the tubular body.

12. The medical device of claim 8 , wherein the second protrusions reduce surface contact between the ligation band and the radially outer surface, and include teetering points for initiating tilting of the ligation band as the ligation band moves across the second protrusions.

13. A medical device for deploying a ligation band, comprising:
a tubular body including:
a proximal end,
a distal end,
a radially inner surface defining a lumen through the tubular body, and
a radially outer surface including:
a distal region,
a proximal region, and
a plurality of radially inwardly extending grooves formed in the radially outer surface, in the distal region, each groove extending transverse to a longitudinal axis of the body,
a plurality of protrusions arranged in circumferential rows in the proximal region, the protrusions being positioned on the proximal region proximally of a proximal-most one of the grooves.

14. The medical device of claim 13 , wherein each of the plurality of radially inwardly extending grooves extends circumferentially around a portion of the radially outer surface.

15. The medical device of claim 13 , wherein each of the plurality of radially inwardly extending grooves includes a middle portion and opposite end portions, the middle portion being at least one of wider than and deeper than the opposite end portions.

16. The medical device of claim 13 , wherein each of the plurality of radially inwardly extending grooves includes a proximal surface and a distal surface, a length of the proximal surface being shorter than a length of the distal surface.

17. The medical device of claim 13 , wherein at least one of the radially inwardly extending grooves includes an edge, the edge acting as a teetering point for initiating tilting of the ligation band as the ligation band moves over the edge.

Assignees

• Boston Scient Scimed Inc

Inventors

• Smith Paul
• Schaubhut Andrew
• Carrillo Jr Oscar R
• Golden John B
• Isaacson Brad M
• Amos Michael D
• May Norman C
• Yan Dengzhu
• Weldon James
• Congdon Daniel

Classifications

• A61B2017/12018

  Elastic band ligators · CPC title

• A61B2017/00296

  mounted on an endoscope · CPC title

• A61B2017/00269

  endoscopic mucosal resection EMR · CPC title

• A61B2017/306

  holding by means of suction · CPC title

• A61B17/12013 Primary

  for use in minimally invasive surgery, e.g. endoscopic surgery · CPC title